comment HI workflows which make no sense now
update GEN-SIM input of postLs1 wf's to CMSSW_7_2_0_pre3-POSTLS172_V3-v1; comment out steps needed by HI wf's which make no sense now
remove unused releases from the list of processing srings; update workflows, accordingly
add ZMM_13 to the set of pileup workflows
Merge pull request #4959 from franzoni/update-input-samples-CMSSW_7_2_0_pre4

Update input samples